I tried it on a friend's 360 recently and loved it. Even though I've played so many shooters to a point of jadedness, I still found myself immersed in the environment and the action is top notch.

By the way, the PC version is flawed. To call the porting job half-assed would be letting it off light. All the in-game control instructions are for an X360 controller (Who the hell does that??) which wouldn't be a big deal if the menu navigation wasn't ALSO left unchanged. (Hint: To back out of a menu, use the Mouse 2 key, not the obvious ESC.) Also, this game requires you to connect to Steam, yes the same, insufferable Steam that controls Half-Life 2 and CS: Source.